Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 3 - Section 3.1 - Quadratic Functions and Models - 3.1 Exercises - Page 252: 48



Work Step by Step

f(x)=a(x-h)^2+k y=a(x-h)^2+k y=a(x+1)^2+5 -7=a(-3+1)^2+5 -12=a(-3+1)^2 -12=a(-2)(-2) -12=a(4) -12/4=a(4)/4 a=-3 Plug in a, h, k into the first equation f(x)=-3(x+1)^2+5
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